diff --git a/configure b/configure
index c935bad4b88e8c1b54ffc657c001f9f52a23033a..ba94dc2b4ec2da43b77e94e9fe8036692a4e4aab 100755
--- a/configure
+++ b/configure
@@ -1,8 +1,8 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for sybilSBML 2.0.8.
+# Generated by GNU Autoconf 2.69 for sybilSBML 3.0.0.
 #
-# Report bugs to <geliudie@uni-duesseldorf.de>.
+# Report bugs to <clausjonathan.fritzemeier@uni-duesseldorf.de>.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -267,8 +267,8 @@ fi
     $as_echo "$0: be upgraded to zsh 4.3.4 or later."
   else
     $as_echo "$0: Please tell bug-autoconf@gnu.org and
-$0: geliudie@uni-duesseldorf.de about your system,
-$0: including any error possibly output before this
+$0: clausjonathan.fritzemeier@uni-duesseldorf.de about your
+$0: system, including any error possibly output before this
 $0: message. Then install a modern shell, or manually run
 $0: the script under such a shell if you do have one."
   fi
@@ -580,9 +580,9 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='sybilSBML'
 PACKAGE_TARNAME='sybilsbml'
-PACKAGE_VERSION='2.0.8'
-PACKAGE_STRING='sybilSBML 2.0.8'
-PACKAGE_BUGREPORT='geliudie@uni-duesseldorf.de'
+PACKAGE_VERSION='3.0.0'
+PACKAGE_STRING='sybilSBML 3.0.0'
+PACKAGE_BUGREPORT='clausjonathan.fritzemeier@uni-duesseldorf.de'
 PACKAGE_URL=''
 
 # Factoring default headers for most tests.
@@ -1230,7 +1230,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures sybilSBML 2.0.8 to adapt to many kinds of systems.
+\`configure' configures sybilSBML 3.0.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1291,7 +1291,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of sybilSBML 2.0.8:";;
+     short | recursive ) echo "Configuration of sybilSBML 3.0.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1315,7 +1315,7 @@ Some influential environment variables:
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
-Report bugs to <geliudie@uni-duesseldorf.de>.
+Report bugs to <clausjonathan.fritzemeier@uni-duesseldorf.de>.
 _ACEOF
 ac_status=$?
 fi
@@ -1378,7 +1378,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-sybilSBML configure 2.0.8
+sybilSBML configure 3.0.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1537,9 +1537,9 @@ $as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
 $as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
 $as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
-( $as_echo "## ------------------------------------------ ##
-## Report this to geliudie@uni-duesseldorf.de ##
-## ------------------------------------------ ##"
+( $as_echo "## ----------------------------------------------------------- ##
+## Report this to clausjonathan.fritzemeier@uni-duesseldorf.de ##
+## ----------------------------------------------------------- ##"
      ) | sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
@@ -1676,11 +1676,78 @@ fi
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_link
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by sybilSBML $as_me 2.0.8, which was
+It was created by sybilSBML $as_me 3.0.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -3528,6 +3595,101 @@ else
 fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for readSBML in -lsbml" >&5
+$as_echo_n "checking for readSBML in -lsbml... " >&6; }
+if ${ac_cv_lib_sbml_readSBML+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsbml  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char readSBML ();
+int
+main ()
+{
+return readSBML ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_sbml_readSBML=yes
+else
+  ac_cv_lib_sbml_readSBML=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_sbml_readSBML" >&5
+$as_echo "$ac_cv_lib_sbml_readSBML" >&6; }
+if test "x$ac_cv_lib_sbml_readSBML" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBSBML 1
+_ACEOF
+
+  LIBS="-lsbml $LIBS"
+
+else
+  as_fn_error $? "Could not link to libSBML:
+      use --with-sbml-lib or PKG_LIBS to specify the library path and the libraries to pass to the linker." "$LINENO" 5
+fi
+
+
+ac_fn_c_check_header_compile "$LINENO" "sbml/packages/fbc/common/FbcExtensionTypes.h" "ac_cv_header_sbml_packages_fbc_common_FbcExtensionTypes_h" "#include <sbml/SBMLTypes.h>
+"
+if test "x$ac_cv_header_sbml_packages_fbc_common_FbcExtensionTypes_h" = xyes; then :
+
+else
+  as_fn_error $? "Could not find specific FBC header of libSBML:
+      make sure your libSBML version is >= 5.13." "$LINENO" 5
+fi
+
+
+
+#AC_CHECK_LIB([sbml], [SBMLExtensionRegistry_getRegisteredPackages], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#		make sure your libSBML version is >= 5.13.]))
+
+for ac_func in SBase_getPlugin SBMLExtensionRegistry_getRegisteredPackages GeneProductAssociation_setAssociation FbcReactionPlugin_getLowerFluxBound
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  as_fn_error $? "Could not find specific FBC function of libSBML:
+		make sure your libSBML version is >= 5.13." "$LINENO" 5
+fi
+done
+
+
+#AC_SEARCH_LIBS([SBase_getPlugin], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+#AC_SEARCH_LIBS([SBMLExtensionRegistry_getRegisteredPackages], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+
+
+#AC_SEARCH_LIBS([GeneProductAssociation_setAssociation], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+
 
 
 
@@ -4077,7 +4239,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by sybilSBML $as_me 2.0.8, which was
+This file was extended by sybilSBML $as_me 3.0.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4124,13 +4286,13 @@ Usage: $0 [OPTION]... [TAG]...
 Configuration files:
 $config_files
 
-Report bugs to <geliudie@uni-duesseldorf.de>."
+Report bugs to <clausjonathan.fritzemeier@uni-duesseldorf.de>."
 
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-sybilSBML config.status 2.0.8
+sybilSBML config.status 3.0.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index c75e9c7e0a8012cf7e0f97754609a57bea301223..08faede40197a400f9e86fc8520a65aa90f60143 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([sybilSBML], [2.0.8], [geliudie@uni-duesseldorf.de])
+AC_INIT([sybilSBML], [3.0.0], [clausjonathan.fritzemeier@uni-duesseldorf.de])
 
 dnl # --------------------------------------------------------------------
 dnl # global (environment) variables
@@ -236,6 +236,38 @@ AC_SEARCH_LIBS([readSBML], [sbml], ,
     AC_MSG_ERROR([Could not link to libSBML:
       use --with-sbml-lib or PKG_LIBS to specify the library path and the libraries to pass to the linker.]))
 
+AC_CHECK_LIB([sbml], [readSBML], ,
+    AC_MSG_ERROR([Could not link to libSBML:
+      use --with-sbml-lib or PKG_LIBS to specify the library path and the libraries to pass to the linker.]))
+
+AC_CHECK_HEADER([sbml/packages/fbc/common/FbcExtensionTypes.h], ,
+ AC_MSG_ERROR([Could not find specific FBC header of libSBML:
+      make sure your libSBML version is >= 5.13.]),
+      [#include <sbml/SBMLTypes.h>])
+
+#AC_CHECK_LIB([sbml], [SBMLExtensionRegistry_getRegisteredPackages], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#		make sure your libSBML version is >= 5.13.]))
+
+AC_CHECK_FUNCS([SBase_getPlugin SBMLExtensionRegistry_getRegisteredPackages GeneProductAssociation_setAssociation FbcReactionPlugin_getLowerFluxBound], ,
+	AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+		make sure your libSBML version is >= 5.13.]))
+
+#AC_SEARCH_LIBS([SBase_getPlugin], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+#AC_SEARCH_LIBS([SBMLExtensionRegistry_getRegisteredPackages], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+
+
+#AC_SEARCH_LIBS([GeneProductAssociation_setAssociation], [sbml], ,
+#    AC_MSG_ERROR([Could not find specific FBC function of libSBML:
+#      make sure your libSBML version is >= 5.13.]))
+
+
 
 dnl # --------------------------------------------------------------------
 dnl # substitute src/Makevars